9644444628 has 48 divisors (see below), whose sum is σ = 27696869760. Its totient is φ = 2543589504.

The previous prime is 9644444599. The next prime is 9644444647. The reversal of 9644444628 is 8264444469.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4414863 + ... + 4417046.

It is an arithmetic number, because the mean of its divisors is an integer number (577018120).

Almost surely, 2^9644444628 is an apocalyptic number.

It is an amenable number.

9644444628 is an abundant number, since it is smaller than the sum of its proper divisors (18052425132).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

9644444628 is a wasteful number, since it uses less digits than its factorization.

9644444628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8831936 (or 8831934 counting only the distinct ones).

The product of its digits is 5308416, while the sum is 51.

The square root of 9644444628 is about 98206.1333522505. The cubic root of 9644444628 is about 2128.5919138102.

The spelling of 9644444628 in words is "nine billion, six hundred forty-four million, four hundred forty-four thousand, six hundred twenty-eight".